Akustična analiza in optimizacija dirkalnega avtomobilskega izpušnega sistema.

Curk, Tim (author), Prezelj, Jurij (mentor)

Avtomobili z notranjim izgorevanjem ustvarjajo različne hrupe, hrup izpušne cevi je med njimi najglasnejši. Potrebno je izvedeti, kakšne doprinose k dušenju zvoka imajo različni dušilni elementi celotnega izpušnega sistema in jih nato predelati in dodelati z uporabo simulacijskih orodij ter tako preveriti zvočno raven in padec le-te skozi celoten sistem. Pregledu celotne teoretične osnove izpušnih komponent in njihovega delovanja sledi preizkus v fizični obliki s pomočjo merilnih orodij nato pregled trenutno vgrajenih elementov sistema in predstavitev možnih nadgradenj ter udejanjanje teh v simulacijah. S pomočjo računalniških orodij primerjamo rezultate predelav s trenutnim izpušnim sistemom ter prikažemo primerjavo zvočne ravni simulacije in meritev in opredelimo verodostojnost tovrstne simulacije in morebitno nadaljnjo uporabo pri razvijanju izpušnih sistemov.

• Language: Slovenian
• Keywords: motor z notranjim zgorevanjem, akustika cevi, aeroakustika, izpušni sistem, dirkalnik, frekvenčni odziv, akustična simulacija, dušilci zvoka
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [T. Curk]
• Year: 2022
• Number of pages: XV, 34 f.
• PID: 20.500.12556/RUL-139758
• UDC: 519.876.5+534.6(043.2)
• COBISS.SI-ID: 122255107
• Publication date in RUL: 07.09.2022

CURK, Tim, 2022, Akustična analiza in optimizacija dirkalnega avtomobilskega izpušnega sistema. [online]. Bachelor’s thesis. Ljubljana : T. Curk. [Accessed 13 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=139758

Secondary language

• Language: English
• Title: Acoustic analysis and optimization of a performance automotive exhaust system.

Abstract

Internal combustion automobiles produce a variety of noises, the loudest of which is the exhaust pipe noise. It is necessary to find out the contribution to sound attenuation of different silencing elements of the whole exhaust system and then to process and/or refine them using simulation tools to check the sound level and its drop through the whole system. An overview of the overall theoretical basis of exhaust components and their operation is followed by a physical test using measurement tools, then an overview of the currently installed system components and a presentation of possible upgrades and their implementation in simulations. Using computer aided tools, we compare results of the conversions with the current exhaust system and show the comparison betweeen simulated and physically measured noise levels to determine the validity of such simulations and possible further use in exhaust development.

• Keywords: internal combustion engine, pipe acoustics, aeroacoustics, exhaust system, exhaust system, race car, frequency response, acoustic simulation, silencers